Oil burner



March 16 1926. 1,577,405

M. CARTER OI L BURNER Filed Sept. lO. 1924 5 Sheets-Sheet 1 Z /v refr/br Mm CML March 16 1926.

M. CARTER OIL BURNER Filed Sept. l0, 1924 5 Sheets-Sheet 2 March 16 1926.

M. CARTER OIL BURNER Filed Sept. l0. 1924 5 Sheets-Sheet 5 Kwff March 16 1926.

M. CARTER OIL BURNER Filed Sept` l0. 1924 5 Sheets-Sheet 4 5 Sheets-Sheet 5 March 16 1926.

M. CARTER OIL -BURNER Filed Sept. l0. 1924 Patented Mar. 16, i925.

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UNITED STATES PATENT. OFFHCE.

MITCHELL CARTER, OF SALT LAKE CITY, UTAH, ASSIGNOR TO THERMIC GENERATING COMPANY, A CORPORATION UTAH. l

OIL BURNER.

Application filed September 10, 1924. Serial No. 736,939.

To all 107mm t 77mg/ concern:

Be it known that I, MITCHELL CARTER, a citizen ef the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Oil Burners, of

hold carbon in or around the exit ports, and.

the generator is so constructed that greater heat may be supplied to vaporize the oil as it passes through the generator, and particles of carbon which usually accumulate inV the generator are destroyed or burned.

A further object is to provide an apparatus which will vaporize the oil in a generator having an open exit commensurate with the heat desired and thereby eliminateY thenoise of burners which atomize thezoil instead of vaporiaing it, and also to provide a slow, steady flow of gas through the jets. A further object is toy provide a `flame by the burning gas striking against a concave oxygen from only one side thereof until said appended claims.

In the drawings in which I have shown the best and most substantial embodiment of my invention, Figure 1 is a diagrammatic plan showing the substantialV features'of my device, parts cut away to show how the device is used in the ordinary house furnace or heating plant. Figure 2 is plan view of the device,` with the generator vcut away. Figure il is a side elevation of the device. Figure 4t is a vertical section of the Idevice on line LMA of Figure 2. Figure 5 is an end elevation of the gas distributing tubes or burners. Figure 6 is a longitudinal section of the casing for the valve shown in Figure CFI surface whereby the flame is supplied with of this' application and pointed out in the 8. Figure 7 is a longitudinal section of the `casing for the valve L. Figure 8 is a plan view of theI regulating valve and stem. Figure 9 is a vertical section of the triangular member 30. Figure 10 is a lon gitudinal section cutting the two valves L and P, `and their respective casings, on line 10-10 on Figure 9.

My invention consists of a priming pan A having radially disposed braces 1 which are integral with a base support and said pan Av and lead therefrom, to an annular base-support B. An asbestos mat J is provided in said receptacle A for use as a lighter, as hereafter explained and described.y A ii oil supply pipe 9 connects the oil tank O with.

the valve controlledl conduit 10,- and the flow of oil is by gravity, with the tank O about four feet higher than the conduit 10 or slight pressure may be used. A needle valve C Controls and regulates the flow of the oil fromthe tank to'v said conduit 1.0, which is used first 'for priming, by allowing, when the deviceis operated, ten to twelve drops of oil to flow into receptacles A. The gener* ator Il is mounted above and concentric with the said receptacle A by the tubes 12 and 13; `the said tube 12 opens at its lowerend into the said conduit 10, and at its upper end into the said generator D, and the tube 13 is similarly connected at its upper end with the. interior ofsaid` generator D. The said tube 1S is curved and bent downwardly and then laterally in a dianietrical direction as to said receptacle A and is weldedl on the valve nozzle 1:11. The said tube 18 is fastened on the upper edge of said receptacle B lby clamp 15. The saidv generator D consists of a hollow circular saucer-shaped or concave-conveX member 16 with the concave side outward and withthe'convex side reinforced to:

give Vgreater strength. On the outer edge of said saucer-shaped member 16, another concavo-convex plate 18 is welded which forms the top of said Igenerator D, lwith its reinforcement f generator, at a temperature up to 1600 degrees F. which temperature may at some time be required in using the device. The concavo-convex form given the top and bottom of said generator gives the greatest strength to withstand the pressure of the gas or vapors generated in the device and the expansion and contraction of the metal.

The said valve nozzle 14 is tubular in form and is welded on the tube 13. The other end portion of said valve nozzle 14 is tapered and given a conical shape with a closed end. An exitport 19 is cut through the tapered wall of said nozzle 14 through which the gas flows. A tubular valve case 2O is carried on said nozzle 14, and one portion o' the interior of said case y2O is truste-conical in form to closely iit the exterior of said valve nozzle 14, and in the wall of said case are bored a pluralityv of ports, each of which may be brought into alinement with said exit port 19 by rotating or partially rotating said case 20. A plurality of jets 21, each of which is given the form of a tube, are detachably secured in the wall of said valve case 2() and conforming respectively on their exterior with the ports in the wall of said valve case 20. he said jets 21 extend radially in the form of hollow spokes from the said valve case 20. lThe exits from the said jets 21 are of different sizes, and their lengths are graduated in orderA that the longest burner will have the smallest exit and the shortest burner will have the largest exit. One o1c said ports in the wall of said case 2O may not have a jet as the exit port 19 in the nozzle 14, may have the saine size as the largest port in the wall of said valve case 20.

An operating rod 22 is pivoted in the end of said valve case 2O by the pin 23, which rod 22 is mounted tor rotation in the bearing A regulator dial 25 is secured on the end of said rod 22 by which said rod may be partially rotated in either direction, and on said dial is a graduated index consisting of the numerals 1 to 6 inclusive, clock-wise and concentrically disposed, as to said wheel. The said numerals are spaced apart to indicate to the operator that when the smallest of said burners 21 is pointed vertically the index numeral l will show at the top of said regulator dial 25, and the regulator dial 25 is notched on the perimeter to receive the end ot' the jet indicator 26, which is a spring that is secured on the valve case 35.

A thermostat K is provided consisting of a brass rod or pipe 2 threaded externally at one end to secure it to the base B. At the other end it enters the thermostat valve L, through the packing nut 26y The said thermostat valve L consists of a cylindrically shaped casing' 29, which is externally threaded at each end as at 3 and 4, and.

centrally bored with three different sized holes as atl 5, 6, and 7 to form a seat for the conical end portion of the valve L. The said packing nut 26 is screwed on the threads 3 and closes that end of the valve. A cap nut 8 is screwed on the threads 4 of the said casing 29 which nut carries a spiral spring M, that bears at its other end on said valve L. Integral with said casing 29 is a triangular member 3() which forms the support for the oil supply pipe 10, and the housing or case for the regulating valve l), and is also longitudinally bored to form the conduits 31, 32, and 33. The main oil supply pipe 10 is screwed into the base ol said triangular member 30 and has ports in said pipe in alinement with said ports 31, 32, and 33, and another port is provided as shown at 34 in the base of said triangular member, which port is larger than either of the ports 31, 32, or 33, and connects with the valve C, which valve regulates the priming oil. At the apex of said triangular member 30 is provided a cylindrical casing 35 which is externally threaded at each end. On one end is screwed a packing nut 36, through which the valve stem 40 is carried, and on the other end of said casing 35 is screwed the adjusting nut T. The said nut T is internally threaded at one end portion with left hand threads to receive the end of the casing 35, and is internally threaded at the other end with right hand threads to be secured on a portion of the valve stem 40, which end is also externally threaded to receive a packing nut 38. The said casing 35 is centrally bored with two sized holes which are tapered toward each other toforni a frusto-conical valve seat, and in which is operated the said regulat ing valve P. The said valve P is a portion of the said valve stem 40, which stem is externally threaded at both ends, on one end of which is secured the regulator dial 25, and on the other end of said stem is screwed the spring housing 41, one end portion ot which is internally threaded to receive a regulating plug 42, and the end of the valve stem 40, the other end portion carries a spiral spring 43, and the end oll the operating rod 22, with the said spring` 43 bearing against the said rod 22 and the regulating plug 42. A portion of said valve stem 40 contiguous the said valve portion l? is externally threaded with right hand threads, as shown at 44 to receive the said adjusting nut T.

The operation of my device is as follows:

From ten to twelve drops of oil are allowed to ilow from the main oil supply pipe 10 through the valve C and the port 34 into` the priming receptacle A. Said valve is then closed and theoil in the receptacle A is ignited. The heat from the burning oil will vaporize the oil remaining in the pipe 13 and valve nozzle 14: forming a gas. As the heat increases the gas expands and flows out of either' of the jets 21 which is in alinement with port 19 and is ignited by the flame of the priming oil. The fiames from t-he remaining priming' oil and the flowing gas will in about three minutes vaporize all of the lilm of oil in the generator D and in pipes 12 and 13 and the heat will be suflicient to operate the thermostat K and through said thermostat open the valve L and allow a full flow of oil to flow through the regulating valve I. vAnd thereafter the operation is continuous and may be manually regulated by turning the regulator dial and its connections, the valve P, the rod 22, casing 2O with jets 21 to bring the desired jet 21 into alignment with port 19 in the sleeve valve 20, which regulates the oil for the particular jet and flow desired.

If at any time it is desired to increase or diminish the heat the operator manually turns the regulator dial 25 to bring the desired jet to the Vertical position and the heat will 'be diminished or increased as required.

Should the flame become accidentally ex* tinguished for any reason the thermostat will automatically cut oftI the supply of oil and the burner will be extinguished thereby eliminating the danger from flooding the oil into the base of the furnace.

I regulate the heat in three ways heretofore not known and practiced in oil burners, viz: first, the supply of oil, second, the size of the case nozzles, third the spacing of the flame from the bottom of the generator.

The generator D is designed to present the maximum resistance to the flame, the bottom being concave so the expanding, burning gases from jets 21 will be presented to the bottom surface of the generator at about a right angle. All pipes, jets or ports of the generators and sleeve valve 20 are so constructed that they offer the minimum resistance and friction to the gases. The ports of the jets are so spaced from the bottom of the generator that the gas flowing therethrough gathers just enough oxygen from the surrounding air to start combustion under the bottom of the generator and not enough oxygen to make complete combustion. Additional oxygen is supplied from the air to the flame exposed tothe air above the generator and this flame has a high temperature. rIhe complete combustion takes place after the flame spreads out and after passing the generator. The fiame is thin and sheet like and presents a maximum surface to the atmosphere taking on oxygen very readily to complete combustion. The flame is even and circular and has practically no ends and the heat is thrown out against the wallsl of the lire box within which the de vice is used. The burner is so regulated that it operates with about one-half pound pressure in the generator thereby getting a better cracking of the oil into gas and eliminating the noise common with most oil burners and producing perfectly dry hydrocarbon gas. There is no danger of back fire from an air bubble or water bubble in the jet line causing the flame to become extinguished momentarily and igniting again, for after the oil is turned completely off it takes about three minutes for the flame to go out and the gas to cease flowing.

Having thus described my invent-ion and its operation I desire to secure by Letters Patent and claim:

1. An oil burner comprising an initial oil burning receptacle; a concavo-convex hollow generator spaced above said oil receptacle; an oil supply pipe connecting an oil supply with the interior of said generator; a U-shaped gas tube leading from the interior of said generator to a valve nozzle; a valve nozzle having a port in its side wall; a sleeve valve case rotatable on said valve nozzle and having a plurality of radially extended jets therein, of different lengths, and sized bore.

2. An oil burner comprising an oil supply pipe; a concavo-convex hollow generator connected with said pipe; ineans for the initial heating of said generator; a gas tube connected at one end with said generator; a frusto-conical valve nozzle on the other end of said tube and having a port in its side wall; a nozzle case having an opening in one end conforming with the shape of said valve nozzle and having a plurality of ports in its side wall7 adapted to be brought into alignment with the port in said valve noz zle; centrally bored radially disposed jets in each of the ports in said case and of Vdifferent lengths; and means to rotate said nozzle case.

3. An oil burner comprising a hollow circular generator having spaced apart concavo-convex top and bottom with the concave side of both turned in the same direction and tow-ard the flame jets; means to supply oil to said generator; a curved gas pipe to allow gas to flow from said genera.- tor; a frusto-conical valve nozzle secured on the end of said gas pipe and having an exit port in its side wall; a rotatable casing conforming to the exterior surfaceof said valve nozzle; one or more flame jets therein of different lengths and sizes, each adapted to be brought into alignment with the port in said valve nozzle and to direct a flow of gas toward the under face of said generator; and means to regulate the flow of oil into said generator.

In testimony whereof I have afxed my signature.

MITCHELL CARTER. 

